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Braille
Braille (Pronounced: ) is a tactile writing system used by people who are visually impaired, including people who are blind, deafblind or who have low vision. It can be read either on embossed paper or by using refreshable braille displays that connect to computers and smartphone devices. Braille can be written using a slate and stylus, a braille writer, an electronic braille notetaker or with the use of a computer connected to a braille embosser. Braille is named after its creator, Louis Braille, a Frenchman who lost his sight as a result of a childhood accident. In 1824, at the age of fifteen, he developed the braille code based on the French alphabet as an improvement on night writing. He published his system, which subsequently included musical notation, in 1829. The second revision, published in 1837, was the first binary form of writing developed in the modern era. Braille characters are formed using a combination of six raised dots arranged in a 3 ×&nb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Braille Writer
Braille (Pronounced: ) is a tactile writing system used by people who are visually impaired, including people who are blind, deafblind or who have low vision. It can be read either on embossed paper or by using refreshable braille displays that connect to computers and smartphone devices. Braille can be written using a slate and stylus, a braille writer, an electronic braille notetaker or with the use of a computer connected to a braille embosser. Braille is named after its creator, Louis Braille, a Frenchman who lost his sight as a result of a childhood accident. In 1824, at the age of fifteen, he developed the braille code based on the French alphabet as an improvement on night writing. He published his system, which subsequently included musical notation, in 1829. The second revision, published in 1837, was the first binary form of writing developed in the modern era. Braille characters are formed using a combination of six raised dots arranged in a 3 ×& ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mainland Chinese Braille
(Mainland) Chinese Braille is a braille script used for Standard Mandarin in China. Consonants and basic finals conform to international braille, but additional finals form a semi-syllabary, as in zhuyin (bopomofo). Each syllable is written with up to three Braille cells, representing the initial, final, and tone, respectively. In practice tone is generally omitted as it is in pinyin. Braille charts Traditional Chinese Braille is as follows: Initials Chinese Braille initials generally follow the pinyin assignments of international braille. However, ''j, q, x'' are replaced with ''g, k, h'', as the difference is predictable from the final. (This reflects the historical change of ''g, k, h'' (and also ''z, c, s'') to ''j, q, x'' before ''i'' and ''ü''.) The digraphs ''ch, sh, zh'' are assigned to (its pronunciation in Russian Braille), (a common pronunciation in international braille), and . ''R'' is assigned to , reflecting the old Wade-Giles transcription of . ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
English Braille
English Braille, also known as ''Grade 2 Braille'', is the braille alphabet used for English. It consists of around 250 letters ( phonograms), numerals, punctuation, formatting marks, contractions, and abbreviations (logograms). Some English Braille letters, such as , correspond to more than one letter in print. There are three levels of complexity in English Braille. Grade 1 is a nearly one-to-one transcription of printed English and is restricted to basic literacy. Grade 2, which is nearly universal beyond basic literacy materials, abandons one-to-one transcription in many places (such as the letter ) and adds hundreds of abbreviations and contractions. Both Grade 1 and Grade 2 have been standardized. "Grade 3" is any of various personal shorthands that are almost never found in publications. Most of this article describes the 1994 American edition of Grade 2 Braille, which is largely equivalent to British Grade 2 Braille. Some of the differences with Unified English Braill ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Louis Braille
Louis Braille (; ; 4 January 1809 – 6 January 1852) was a French educator and the inventor of a reading and writing system, named braille after him, intended for use by visually impaired people. His system is used worldwide and remains virtually unchanged to this day. Braille was blinded at the age of three in one eye as a result of an accident with a stitching awl in his father's harness making shop. Consequently, an infection set in and spread to both eyes, resulting in total blindness. At that time there were not many resources in place for the blind, but he nevertheless excelled in his education and received a scholarship to France's Royal Institute for Blind Youth. While still a student there, he began developing a system of tactile code that could allow blind people to read and write quickly and efficiently. Inspired by a system invented by Charles Barbier, Braille's new method was more compact and lent itself to a range of uses, including music. He presented his wor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1829 Braille
Louis Braille's original publication, ''Procedure for Writing Words, Music, and Plainsong in Dots'' (1829), credits Barbier's night writing as being the basis for the braille script. It differed in a fundamental way from modern braille: It contained nine decades (series) of characters rather than the modern five, utilizing dashes as well as dots. Braille recognized, however, that the dashes were problematic, being difficult to distinguish from the dots in practice, and those characters were abandoned in the second edition of the book. The first four decades indicated the 40 letters of the alphabet (39 letters of the French alphabet, plus English ''w''); the fifth the digits; the sixth punctuation; the seventh and part of the eighth mathematical symbols. The seventh decade was also used for musical notes. Most of the remaining characters were unassigned. Script As in modern braille, most of the higher decades were derived from the first: *Decades 1–4 were the same as today and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Braille Notetaker
The Perkins Brailler is a "braille typewriter" with a key corresponding to each of the six dots of the braille code, a space key, a backspace key, and a line space key. Like a manual typewriter, it has two side knobs to advance paper through the machine and a carriage return lever above the keys. The rollers that hold and advance the paper have grooves designed to avoid crushing the raised dots the brailler creates. Although braille notation was designed for people who are blind or visually impaired to read, prior to the introduction of the Perkins Brailler, writing braille was a cumbersome process. Braille writers created braille characters with a stylus and slate (as developed by Louis Braille) or by using one of the complex, expensive, and fragile braille writing machines available at the time. History The first Braille writer machine was presented by Frank Haven Hall in 1892. The original Perkins Brailler was produced in 1951 by David Abraham (1896–1978), a woodworki ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bharati Braille
Bharati braille ( ), or Bharatiya Braille ( hi, भारती ब्रेल ' "Indian braille"), is a largely unified braille script for writing the languages of India. When India gained independence, eleven braille scripts were in use, in different parts of the country and for different languages. By 1951, a single national standard had been settled on, Bharati braille, which has since been adopted by Sri Lanka, Nepal, and Bangladesh. There are slight differences in the orthographies for Nepali in India and Nepal, and for Tamil in India and Sri Lanka. There are significant differences in Bengali Braille between India and Bangladesh, with several letters differing. Pakistan has not adopted Bharati braille, so the Urdu Braille of Pakistan is an entirely different alphabet than the Urdu Braille of India, with their commonalities largely due to their common inheritance from English or International Braille. Sinhala Braille largely conforms to other Bharati, but differs signif ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Braille Display
A refreshable braille display or braille terminal is an electro-mechanical device for displaying braille characters, usually by means of round-tipped pins raised through holes in a flat surface. Visually impaired computer users who cannot use a standard computer monitor can use it to read text output. Deafblind computer users may also use refreshable braille displays. Speech synthesizers are also commonly used for the same task, and a blind user may switch between the two systems or use both at the same time depending on circumstances. Mechanical details The base of a refreshable braille display often integrates a pure braille keyboard. Similar to the Perkins Brailler, the input is performed by two sets of four keys on each side, while output is via a refreshable braille display consisting of a row of electro-mechanical character cells, each of which can raise or lower a combination of eight round-tipped pins. Other variants exist that use a conventional QWERTY keyboard for in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Refreshable Braille Display
A refreshable braille display or braille terminal is an electro-mechanical device for displaying braille characters, usually by means of round-tipped pins raised through holes in a flat surface. Visually impaired computer users who cannot use a standard computer monitor can use it to read text output. Deafblind computer users may also use refreshable braille displays. Speech synthesizers are also commonly used for the same task, and a blind user may switch between the two systems or use both at the same time depending on circumstances. Mechanical details The base of a refreshable braille display often integrates a pure braille keyboard. Similar to the Perkins Brailler, the input is performed by two sets of four keys on each side, while output is via a refreshable braille display consisting of a row of electro-mechanical character cells, each of which can raise or lower a combination of eight round-tipped pins. Other variants exist that use a conventional QWERTY keyboard for inp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Japanese Braille
Japanese Braille is the braille script of the Japanese language. It is based on the original braille script, though the connection is tenuous. In Japanese it is known as , literally "dot characters". It transcribes Japanese more or less as it would be written in the ''hiragana'' or ''katakana'' syllabaries, without any provision for writing ''kanji''. Japanese Braille is a vowel-based abugida. That is, the glyphs are syllabic, but unlike kana they contain separate symbols for consonant and vowel, and the vowel takes primacy. The vowels are written in the upper left corner (points 1, 2, 4) and may be used alone. The consonants are written in the lower right corner (points 3, 5, 6) and cannot occur alone. However, the semivowel ''y'' is indicated by point 4, one of the vowel points, and the vowel combination is dropped to the bottom of the block. When this point is written in isolation, it indicates that the following syllable has a youon, medial ''y'', as in ''mya''. Syllables be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Korean Braille
Korean Braille is the braille alphabet of the Korean language. It is not graphically-related to other braille scripts found around the world. Instead, it reflects the patterns found in hangul, and differentiates initial consonants, vowels, and final consonants. Charts It features characters for grammatical devices and punctuation. Numerals are similar to those of other braille systems. Consonants Consonants have different syllable-initial and -final variants, capturing some of the feel of hangul. The initial and final variants have the same shapes, but are shifted across the braille block. There are two patterns: The consonants that span the width of the block are shifted one space downward when final. Those that do not span the width of the block are on the right side of the block when initial, but on the left side when final. No consonant occupies more than two rows. *There is no initial version of ''ng''. Initial ''ieung'' in hangul is not written in Korean Braille. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
French Braille
French Braille is the original braille alphabet, and the basis of all others. The alphabetic order of French has become the basis of the international braille convention, used by most braille alphabets around the world. However, only the 25 basic letters of the French alphabet plus ''w'' have become internationalized; the additional letters are largely restricted to French Braille and the alphabets of some neighboring European countries. Letters In numerical order by decade, the letters are: For the purposes of accommodating a foreign alphabet, the letters ''ì, ä, ò'' may be added: There are also numerous contractions and abbreviations in French braille. Punctuation Punctuation is as follows: The lower values are readings within numbers (after the Antoine number marker: see below). Formatting and mode Formatting and mode-changing marks are: As in English Braille, the capital sign is doubled for all caps. and are used to begin and end emphasis within a word. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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